Model valuation£417,0008 Busby Close
Local market context
25 Harrison House is a two-bedroom property in Nash Mills Wharf, Hemel Hempstead, Hemel Hempstead (HP3 9DH). It has a recorded floor area of 60 m² (around 646 sq ft) and construction records dating it to 2012-2021. At 60 m² this is the 28th smallest of 53 units on EPC record in the building, where floor areas span 43–101 m². The building's EPC ratings span D to B, with this unit at the bottom. The latest certificate (November 2025) shows a D (score 61), on the cusp of jumping into the C band. Earlier certificates rated it C (September 2015); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average. The recommended improvements would push it to C (score 76). Main heating runs on electricity.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. On the market in September 2015 and unlisted since — roughly 11 years. Today's modelled estimate of £329,000 is 12.5% above the 2015 sale price.
25 Harrison House sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
Certificate validity
Valid until 19 November 2035
Get a survey for this property
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
25 Harrison House has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
£329,000
Modelled from EPC, postcode comparables.
£292,500
Recorded with HM Land Registry.
29 September 2015Most recent
£292,500
Median price across the last 5 sales in HP3 9DH: £300,000 (2026–2024).
22 Harrison House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9DH
Sold Mar 2026
12 Harrison House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9DH
Sold Feb 2026
24 Harrison House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9DH
Sold Aug 2025
18 Harrison House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9DH
Sold Jun 2025
21 Harrison House, The Embankment, Nash Mills Wharf, Hemel Hempstead, HP3 9DH
Sold Dec 2024
On epc rating, 25 Harrison House runs well behind the street norm.
Price per m²
£4,875
Street avg £4,863
Floor Area
60 m²
Street avg 60 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
0.7 t/year
Street avg 1.3 t/year
Property research, connected
Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.
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Rail-style transport is unusually close for this postcode.
Crime
211/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Mill Close — bus stop.
Closest school
0.3 km
Nash Mills Church of England Primary School. 18 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.

Daytime· 07:00 – 23:00
49.9dB

Night-time· 23:00 – 07:00
40.1dB